California Senator Kamala Harris drops out of the presidential race, citing a lack of funds for her campaign.
U.S. Rep. Scott Perry and U.S. Senator Josh Hawley of Missouri object to Pennsylvania's electoral college votes, forcing a second vote to accept or reject the objection. This comes after the House and the Senate defeated a similar objection to Arizona's electoral college votes from Rep. Paul Gosar and Senator Ted Cruz. The Senate and the House both vote to reject the objection, allowing Joe Biden and Kamala Harris to receive the state’s electoral votes.
The 2020 Republican National Convention begins, running until Thursday. Incumbents President Donald Trump and Vice President Mike Pence are expected to be officially nominated to run for re-election, facing off against former Vice President Joe Biden and Senator Kamala Harris in November.
Former Vice President Joe Biden chooses Senator Kamala Harris as his running mate, making her the presumptive 2020 Democratic vice presidential nominee. She is the first black woman and first Asian-American vice presidential nominee for a major party.
Voters in six U.S. states cast their ballots in the primary elections. Former Vice President Joe Biden wins the Mississippi, Missouri, Michigan, and Idaho primaries and is ahead in Washington (which has not finished tallying votes), while U.S. Senator Bernie Sanders wins North Dakota.